Brake-shoe.



FITZ WILLIAM SARGENT.

BRAKE SHOE. APPLICATION FILED JAN. 23, 1912.

1,026,929. Patented May 21,1912.

. Inventor:

Witt UNITED STATES PATENT OFFICE.

FITZ WILLIAM SARGENT, F MAHWAH, NEW JERSEY, ASSIGNOR TO EDWARD H.

. FALLOWS, OF NEW YORK, N. Y.

BRAKE-SHOE.

Specification of Letters Patent.

Patented May 21,1912.

To all whom it may concern:

Be it known that I, Frrz WILLIAM SAR- cnn'r, a citizen of the UnitedStates, and a resident of Mahwah, in the county of Bergen and State ofNew Jersey, have made and invented certain new and useful Imrovements inBrake-Shoes, of which the ollowing is a specification.

My invention relates to brake shoes de signed more particularly for usewith railway cars and similar vehicles, and the objects thereof are toprovide a brake shoe having a spirally wound wrought metal ribbonembedded in its body portion and arranged edgewise to the wearing faceof the shoe; to provide an improved brake shoe having a recess in itsbody portion and which recess is filled with a non-metallic substancewithin which is embedded a similar spirally wound ribbon; to provide abrake shoe of the type above referred to 'which will be. simple inconstruction and effective, and which may be easily and cheaplymanufactured; and to provide such other improvements in and relating tobrake shoes as are hereinafter described and aclaimed.

Wit-h the above and other objects of invention in view, and referring tothe drawing accompanylng and forming a part of this application; Figure1 is a view showing a side elevation partly broken away to show featuresof internal construction of the preferred form of my improved brakeshoe;

Fig. 2 is a view showing the wearing face of my improved shoe, and, Fig.3 is a view showing a section upon a transverse plane indicated by theline 3-3, Fig. 1.

In the drawin the reference numeral 5 designates the body portion of myimproved brake shoe, 6 is a lug whereby the shoe is secured to a brakehead or equivalent support, and 7 is a steel back embedded in the rearface of the shoe, the lug and steel back,

however, not being involved in the invention to which this applicationrelates.

The body portion 5 is formed from cast metal, such as cast iron, and isrovided with a recess in its front or wearing face,

which recess is shown as extending lon itudinally of, and throughoutsubstantially the entire length of the shoe. The recess referred to isfilled with a non-metallic substance indicated by the referencecharacter 8, whereby a non-metallic insert is formed, and 9 is a wroughtmetal ribbon embedded. in the non-metallic insert 8 and bent to providea plurality of segments lying side by side and extending longitudinallyof the shoe. The ribbon 9 is arranged edgewise to the wearing face ofthe shoe as best shown in Fig. 3, and is preferably corrugated as shownin order that wear upon the wheel with which the shoe is used may beuniformly distributed and the formatipn of grooves in the tread thereofavoided.

The ribbon 9 is preferably bent or wound into the form of a flattenedspiral, the inner end of the ribbon being at 10 and the outer end at 11,Fig. 2. The purpose of this arrangement is to prevent the brake shoe orinsert within which it is embedded from splitting along longitudinalplanes, as it will be seen that portions of the ribbon ('shown at 12 and13) are thus provided which extend past the ends of intermediatesegments of the ribbon and part-way across each end of the shoe. Theseend portions serve to prevent the formation and development ofongitudinal cracks in the body of the shoe or insert, or along the jointbetween the ribbon and medium in which it is embedded, because of thetransverse strengthenin effect thus provided at the ends of the s cc,and serve also to prevent such cracks as may develop in the body of theshoe or insert in which the ribbon is embedded from extending clear tothe ends of the shoe. The spirally wound ribbon therefore materiallystrengthens the shoe or insert transversely, and prevents it fromsplitting along longitudinal planes into two or more parts, and holdsthe parts together if such cracks develop.

It will be understood that the body of the shoe, the non-metallic insertand the spirally wound insert are simultaneously worn away as the shoeis used, and that the character of the wearing face is such as to afforda maximum braking or retarding effect with a minimum of abrading ac tionor injury as by the formation of grooves in the tread of the wheel withwhich the shoe is used.

In manufacturing the brake shoe of the specific form shown in thedrawing, the ribbon 9 after being bent in the flattened or oblong spiralshown, is placed within the .recess in the body portion 5 of the shoe,

after which the non-metallic substance, in plastic form, is pressed intothe spaces between the segments of the ribbon, and between the ribbonand the walls of the recess; or, the nOn-metallic substance and ribbonembedded therein may be first molded and pressed into an integral block,which block as a unit may be then placed in the recess in the body ofthe shoe and suitably anchored or secured therein.

While I have described the composition insert as being non-metallic, itwill be understood that such term is used in contradistinct-ion tometal, such as cast metal or the like, it being possible to secure goodresults with the shoe constructed as above described when thecomposition insert contains metallic particles, as iron borings,filings, etc., as one of the ingredients thereof.

Having thus described my invention, I claim and desire to secure byLetters Patent:-

1. A brake shoe having a spirally wound ribbon of wrought metal embeddedin it and arranged edgewise with reference to its wearing face.

2. A brake shoe having a recess formed in its bodyv portion andextending longitudinally thereof, a non-metallic insert contained withinsaid recess, and a ribbon of wrought metal embedded in said insert andarranged edgewise with reference to the wearing face of the shoe, saidribbon being unconnected with the body portion of the shoe.

3. A brake shoe having a recess formed in its body portion and extendinglongitudinally thereof, a non-metallic insert contained within saidrecess, and a ribbon of wrought metal embedded in said insert andarranged edgewise with reference to the wearing face of the shoe, saidribbon being bent to provide a plurality of segments extendinglongitudinally of the shoe and the same being unconnected with the bodyportion of the shoe.

4. A brake shoe having a recess formed in. its body portion andextending longitudinally thereof, an insert contained within saidrecess, and a ribbon of metal embedded in said insert and arrangededgewise with reference to the wearing face of the shoe, said ribbonbeing bent to provide a plurality of segments extending longitudinallyof the shoe and other portions extending transversely to and locatedadjacent the ends of the shoe. and which transverse portions seg- 5. Abrake shoe having a recess formed in its body portion, an insertcontained within said recess, and a spirally wound rib.

bon of metal embedded in said insert and arranged edgewise withreference to the wearing face of the shoe.

6. A brake shoe having a recess formed in its body portion and extendinglongitudinally thereof throughout substantially the entire length of theshoe, an insert contained within said recess, and a spirally woundribbon of metal embedded in said insert and arranged edgewise withreference to the wearing face of the shoe.

7. A brake shoe having a spirally wound corrugated ribbon of metalembedded in it and arranged edgewise with reference to its wearing face.

8. A brake shoe having a recess formed in its body portion and extendinglongitudinally thereof, a non-metallic insert contained within saidrecess, and a corrugated ribbon of wrought metal embedded in said"insert and arranged edgewise with reference.

to the wearing face of the shoe, said ribbon being unconnected with thebody portion of the shoe.

9. A brake shoe having a recess formed in its body portion and extendinglongitudinally thereof, a non-metallic insert contained within saidrecess, and a corrugated ribbon of wrought metal embedded in said insertand arranged edgewise with reference to the wearing face of the shoe,said ribbon being bent to provide a pluralit of segments extendinglongitudinally o the shoe and the same being unconnected with the bodyportion of the shoe.

10. A brake shoe having a recess formed in its body portion andextending longitudinally thereof, a non-metallic insert contained withinsaid recess, and a corrugated ribbon of wrought metal embedded in saidinsert and arranged edgewise with reference to the wearing face of theshoe, said ribbon being bent to provide a plurality of seg mentsextending longitudinally of the shoe, and other portions extendingtransversely to and located adjacent the ends of the shoe, and whichtransverse portions extend past the ends of intermediate segments ofsaid ribbon.

11. A brake shoe having a recess formed in its body portion, anon-metallic insert contained within said recess, and a spirally woundcorrugated ribbon of wrought metal embedded in said insert and arrangededgewlse with reference to thewearing face of the shoe. 12. A brake shoehaving a recess formed in 1ts body portion and extending longitudinallythereof throughout substantially entire length of the shoe, an insertcontai to the wearing ace of the shoe.

Signed at Mahwah township of Hohokus the in the county of Bergen andState of New ned Jersey this 18th day of January A. D. 1912.

FITZ WILLIAM SARGENT.

Witnesses:

A. V. Bms'ron, E. I. CAMERON.

Gopies of this patent may be obtained for live cents each, by addressingthe "Commissioner of latenta, Washington, D. 0."

